The ZT-9 could well be the strongest production knife on the face of the earth. At a full 1/4 inch wide, the full-tang ZT-9 blade is thicker than standard bayonet blades. But the real difference is the quality of the steel S30V. For all-around performance, S30V is the state-of-the-art in high-end stainless steel. Tough. Wear resistant. Yet sharpens easily. For storage or when you're using the ZT-9 as a field knife, there is a high-impact polymer sheath with ballistic-nylon harness. This versatile sheath can be worn in the drop-down position, on a belt, or attached using the built-in slots. The ZT-9 is the result of the latest collaboration between Zero Tolerance Knives® and Strider Knives®, two companies dedicated to the finest in military and professional-duty knives. The ZT-9 mounts on the M-16/M-4/AR-15 series of rifles. The bayonet is completed with a functional MIL Spec sheath with belt and leg loop designed by Duane Dwyer.